Gas-range.



w. DENBY.

GAS RANGE. APPLIUATION FILED SEPT. 12,1911.

Patented Sept. 9, 1913.

WIT/VESSES:

A TTOR/VEY COLUMBIA PLANOGRAPH co..wAsmNu'roN. n. c.

nrr' ears Paar WYIHE DENIBY, or orrroaco, ILLINOIS.

yEFltJ GAS-RANGE.

1,ov2,5s2.

,"Speeifieation of Letters Patent.

Patented Sept. 9, 1913.

Application filed September 12, 1911. Serial No. 648,967. 7

citizen of the United States, residing at Chicago, inthe county of Cook and State of Illinois, have invented certain new and useful Improvements in Gas- Ranges, of which the following is a specification.

This invention relates to improvements in gas-burning cooking ranges.

One of the objects of the inventionis the provision of a range using gas as fuel that may be built with satisfactory results and economy in fuel consumption in large sizes suitable for hotels and restaurants.

Another object of the invent-ion is the provision of a plurality of ovens and means to regulate the temperature about them whereby one or more ovens may be more or less completely isolated from the heat currents and consumption of fuel may be thereby re,- duced to a minimum whenever it is not desired to use a portion of the range.

The invention consists in the novel construction of a gas-range and the adaptation and combination therewith of regulating and gas-directing devices, as will be hereinafter described and claimed. 7

In the accompanying drawings, Fig. 1

is a longitudinal vertical section of'a range embodying my invention. Fig. 2 is an end elevation of same, shown partly broken away. Fig. 3 is a detail perspective view of a flue-current regulator shown detached.

The reference numeral 1 designates the top of the range casing, 2 the bottom and 3 and 4: the right and left hand side walls of the casing, respectively.

5 and 6 represent symmetrically positioned ovens within the casing each formed with contiguous top, bottom and side wall 7 spaced at approximately an equal distance from said casing to afford communicating flues thereabout, an upper horizontal flue 8, do-wntake flue 9, lower horizontal flue 10 and uptake flue 11, and opposing walls 7 spaced apart to provide a fine 12 therebetween- The top wall of one said ovens may be extended laterally at 7 to connect with the side wall 4 of the casing and close direct communica tion of the upper horizontal flue 8 from the uptake flue 11. 13 is an outlet for smoke and products of combustion located in the upper portion of said uptake flue and to insure suitable distribution of the heat currents about the front walls of the oven 5 a bafl'le-plate 1 1 is provided to avoid a too admission of atmospheric air toaid combustion. Said burners are operatively related to a gas-supply pipe 17 which is adapted to deliver a mixture of gas and air thereto in any suitable manner to support combustion within the flue. A damper 18 is provided for said flues 8 and 12 and may be of any suitable type to regulate or obstruct the admission of combustion gases through the desired channels as willbe hereinafter explained. Fig. 3 illustratesa preferred type of damper which is longitudinally recessed to provide laterally extending marginal front and rear frame parts 18 and 18", respectively. Said recess is formed with apertures 19 with intervening bars 20 therebet-ween. Integral lugs 21 project over said recess and retain in sliding engagement therein a shutter 22 provided with apertures corresponding in dimensions with apertures 19and bars 23, respectively registering with the apertures and bars of said frame when in one extreme sliding position and arranged to have the bars23 completely mask the said apertures 19 at the other extreme position and, obviously, affording a varying de gree of opening through said apertures when set in various medial positions relative'to said frame. f

' 2 1- is a rod rigidly connected at one end with the shutter and having its other bent to afford a handle 25. Said rod is mounted for sliding and rotative movements in a sleeve 26 integrally or otherwise fixedly mounted upon said frame part 18 and is arranged to have its medial portion 2 1 slidably and pivotally engaged within an aperture, not shown, in the front casing wall of the range, the handle 25 projecting upon the outside within convenient reach of the operator. The frame, part 18 is sliding movements longitudinally of the handle the shutter 22 may be opened or closed independently of the swinging movements ofthe damper to properly regulate the. temperatures within the respective flues, as will be hereinafter described.

The operation of the invention may be de-- scribed as follows: Assuming that all the ovens are in operation, the flue damper 18.

is horizontally disposed to mask the flue 12 and permit the unobstructed passage of the combustion gases through the peripheral flues. A mixture of gas and air is caused to enter the upper flue 8, or combustion chamber, through the burners. 15 where it is ignited. Air entering said flue through the holes 16 mingles with the gas and supports combustion. The draft in the flues draws the resultant flame through practically the entire length of the flue 8 fully consuming the inflammable constituents of the mixture and heating the top 1 throughout its entire eX- continued in said draft downwardly through the flue 9 thence through the flues. 1 0, and 11 into the outlet 13. as indicated by the arrows in Fig. 1. The heated currents are brought into. close contact in one continuous direct course with three of the four lateral walls of each of the ovens and heat the same evenly throughout. In addition to this, a subcurrent in said flue 12 may be effected by the adjusted opening of the shutter 22 within the damper 18 to allow the penetration through the apertures 19 of the heated air or gas from the burner downwardly through said flue and causing a minor current in the flue 12, as indicated by darts in Fig. 1.

When it is desired that an even, as represented by 6, be more or less isolated from the heat currents to effect a saving in fuel or for any reason reduce the temperature upon an oven, the damper 18 is elevated to obstruct the passage 8, as shown in dotted lines in Fig. 1, and desirably a less amount of gas is admitted through the burners. The passage of the combustion products will be directed downwardly through the flue 12 into the flue 10 while the oven 6 is removed from directcontact with the main heated currents except within the flue 12. Modified degrees of heat may be imparted to the oven 6 under the described conditions by the more or less opening of the shutter 22 in said' damper which permits a minor current of By proper manipulation of said may be simultaneously adjusted. when the entire flue 8 is employed as a comhustion chamb r the top w ll be highly a heated combustion gas to escape therethrough. A sub-current of greater or less amount is conducted around said oven 6 and also downwardly through said flue 12 while this flue and the passages around three sides of the oven 6' are controlled at will by the damper and its shutter.

I am aware that communicating peripheral flues have been used before in stoves and ranges employing solid fuel, notably in Pa-ts ent No. 990,884, but no range of this type has before been successful using gaseous fuel. Through the employment of the relaf tively long combustion chamber 8 wherein the combustible constituents may be con;

s nned and a proper degree of temperature may be maintained under all conditions to induce combustion, gaseous fuel be utillZGCl with economical results, The radiation of heat fromthe subjacent flues, serves 1 to conserve the heat in the combustion chamher and obviates fluctuation of temperature the-rein that is detrimental to complete combustion. These results are largely due to the provision of the regulating damper which affords a most responsive device to adjust the desired degree of temperature 1 to the various parts of the range and I vide that economical use of fuel that is of prime necessity in the use of gas.

' Besides the previously described regulation Qf temperature about the ovens the heat tent. The products of such combustion are upon the various portions of the range top Thu ed throughout its entire length. or the damper may b adjusted to deflect the main heat currents through the flue 12, shown in dotted lines in Fig. 1, whereupon the top of the range adjacent the burners will be relatively highly heated while the temperature upon the top at the opposite end of the rang may be predete n y regw lated through the shutter 22 of the damper.

It is evident that two ormore ovens may be provided with equally satisfactory re: sults and that other changes and modifications in details may be introduced in the manufacture of the ranges and within the scope of the claim without departing from the spirit of the invention or sacrificing its advantages.

Having described my invention, what I claim as new and desire to secure by Letters-Patent, is i In a range, the combination of a casing, two ovens spaced from the casing and from each other forming horizontal flues above and below the ovens and vertical flues between the casing and. he ovens a etween the ove n's,'the range being provided one end with a source of heat communicating with one of the horizontal flues and with a discharge passageway in communication with the adjacent vertical flue, a pivboth of said ovens, the remainder passing otally mounted damper frame and a damper around one only thereof. carried thereby, said damper frame and said damper each being adjustable and ar-- v WYTHE D ranged to cause all of the heating agent to Witnesses:

pass around one or both of said ovens or to -HQRACE BARNES,-

cause a portion of'said agent to pass around E. PETERSON.

Copies of this patent may be obtained'for five cents each, by addressing the Commissioner of Patents.

Washington, D." G. 

